scala-pickling-as-json-parser-lib.scala

import scala.pickling.Defaults._
import scala.pickling.json.{JSONPickleBuilder, JSONPickleFormat, JsonFormats}
import scala.pickling.{Output, PBuilder, PickleTools, StringOutput}

implicit val pickleFormat: JSONPickleFormat  = new JSONPickleFormat {
  override def createBuilder() = new JSONPickleBuilder(this, new StringOutput) with PickleTools {
    hintStaticallyElidedType()
  }
  override def createBuilder(out: Output[String]): PBuilder = new JSONPickleBuilder(this, out) with PickleTools {
      hintStaticallyElidedType()
    }
}

case class KeyFilePair(priv: String, pub: String, keyPass: String) {
  def this(priv: String) = this(priv, priv+".pub", "")
}
case class Auth(user: String, authType: String, password: String, keyPair: KeyFilePair)
case class Cloud(vendor: String, apiFile: String)
case class DynamicServer(cloud: Cloud, region: String, auth: Auth, size: String)
case class StaticServer(ip: String, sshPort: Int, auth: Auth)

case class Config(name: String,
                  localPort: Int,
                  serverPorts: Seq[Int], //multi port for temp tcp reset
                  serverType: String, //dynamic static
                  dynamicServer: DynamicServer,
                  staticServer: StaticServer
                 )

val keyPair = new KeyFilePair("sshkey")
val auth = Auth("root", "pubkey", "", keyPair)
val cloud = Cloud("digitalocean", "do.conf")
val dynamicServer = DynamicServer(cloud,"nyc3", auth,"512mb")
val conf =new  Config("ditalocean-nyc3", 1080, Seq(443, 1984), "dynamic", dynamicServer, null)

scala> conf.pickle.value
res5: String =
{
  "name": "ditalocean-nyc3",
  "localPort": 1080,
  "serverPorts": {
    "$type": "scala.collection.Seq[scala.Int]",
    "elems": [
      443,
      1984
    ]
  },
  "serverType": "dynamic",
  "dynamicServer": {
    "cloud": {
      "vendor": "digitalocean",
      "apiFile": "do.conf"
    },
    "region": "nyc3",
    "auth": {
      "user": "root",
      "authType": "pubkey",
      "password": "",
      "keyPair": {
        "priv": "sshkey",
        "pub": "sshkey.pub",
        "keyPass": ""
      }
    },
    "size": "512mb"
  },
  "staticServer": null
}